The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 17, 2009
Filed:
Nov. 23, 2005
Daniel Dean Radke, Dubuque, IA (US);
James Arthur Nagorcka, Tarrington Victoria, AU;
Lyal Douglas Allen, Hamilton Victoria, AU;
Lawrence William Bergquist, Dubuque, IA (US);
Daniel Dean Radke, Dubuque, IA (US);
James Arthur Nagorcka, Tarrington Victoria, AU;
Lyal Douglas Allen, Hamilton Victoria, AU;
Lawrence William Bergquist, Dubuque, IA (US);
Deere & Company, Moline, IL (US);
Abstract
An articulated loader has an articulated chassis and two A-frames. The points of the A-frames face each other. The articulated chassis includes a front portion and a rear portion. Likewise, there is a front or first A-frame and a rear or second A-frame. The A-frames are connected to the overall chassis at points close to but offset from the point of vehicle articulation via ball joints and via hydraulic suspension cylinders toward the wider portions of the 'A's. The vehicle is propelled along the ground by tracks that are independently suspended. The A-frames are of approximate equal length along the axis of the vehicle and the ball joints are located as close as practical to the articulation joint. Thus, any vertical forces at the ball joints due to variations in tractive efforts for the vehicle tend to be equal and opposite in direction and to, therefore, minimize any chassis height variations.